Water leaks are usually unexpected, often invisible, and can be very costly.
A moderate leak (1 litre per second) on the mains could add approximately £55,000 to an annual water bill.
If you suspect you have a leak, first read our Leak Assistance Guide. Working with our partners, M & S Water Services, we can help pinpoint a leak and carry out any repairs necessary.
Indications that a hidden leak may be present include:
Pipes can fail at any time, but the following factors increase stress on pipes and joints, making leaks more likely:
Where the water is showing is not always where the leak is located. Our partners, M & S Water Services have highly trained leak detection staff who use a range of equipment to prove where the location of the leak is before they start their work.
As part of a site survey, the following things can be completed:
During the leak detection procedures, there should be no disruption to the water mains or site operations. In cases where what they are doing will affect you, M & S Water are committed to being as flexible as possible. They can work out of hours or at weekends.
Various techniques are employed to firstly narrow the search for the leak into a zone and then pinpoint the leak, typically to less than half a metre. Some of the techniques employed are described below:
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